On Oct 20, 8:44 am, finotti <luis.fino...@gmail.com> wrote:
>
> Sorry... My fault. I had a "max=20", which made "max?" give me:
>
This is really bad that one can redefine a system function just like
this.
This is also a problem in other systems such as Matlab, which causes
confusion specially for new users who do not know that there is a
system function or a constant called say pi or int or sum or max or
etc.., and then they overwrite by making a variable of the same name.
I was hoping that Sage would have been designed to prevent such silly
things errors by having system functions and symbols be protected from
being redefined. But this might not be possible due to the nature of
the system and language used.
In Mathematica, one thing I like about it, is that all its functions
and symbols are protected by default (and they all start with
Uppercase), so one can not do such a trivial mistake.
--Nasser
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